dalek
1. The Investigating Board found that "the forecast weather was suitable for the flight -BUT WOULD HAVE REQUIRED FLIGHT IN ACCORDANCE WITH IFR IN THE VICINITY OF THE MULL OF KINTYRE."
2. All the Witnesses on the Mull gave evidence regarding the extensive Fog covering the higher ground at the time of the crash.
3. The much quoted yachtsman reported sighting the Chinook when "2nm south-west of the Lighthouse." He stated the the aircraft was flying "in a straight line and in level flight and was proceeding towards....the cloud localisation covering the Mull." His best estimate of the speed of the aircraft was "somewhat faster than Sea Kings in level flight." Sea Kings normally operate at 100-110 kts. Groundspeed at impact 2nm later was approx 150 kts.
4. No credible evidence of any technical malfunction which could have caused the crash has been found.
5. Even if, after all this time, evidence could be produced that gave credence to a technical fault; it would not alter the finding of negligence in respect of the complete disregard of the rules for VFR flight.